Dental floss holder



FIG. 1 is a front elevational view of a dental floss holder showing our new design;

FIG. 2 is a rear view;

FIG. 3 is a side view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a dental floss holder, as shown and described. 